Reducing Axial Run-Out in a Flexible Optical Disk by Restricting Airflow to the Aerodynamic Stabilizer

Flexible optical disks (FODs) can be rotated at 15,000 rpm and have the capability of recording at 250 Mbps, the rate necessary for a high definition video recording system (HD-D5). Although the conventional stabilization system can suppress the axial run-out of FODs to approximately 1/10 (${\leq}10...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2010-08, Vol.49 (8), p.08KC02-08KC02-5
Main Authors: Kajiyama, Takeshi, Koide, Daiichi, Tokumaru, Haruki, Takano, Yoshimichi, Onagi, Nobuaki, Aman, Yasutomo
Format: Article
Language:English
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Summary:Flexible optical disks (FODs) can be rotated at 15,000 rpm and have the capability of recording at 250 Mbps, the rate necessary for a high definition video recording system (HD-D5). Although the conventional stabilization system can suppress the axial run-out of FODs to approximately 1/10 (${\leq}10$ \mbox{$\mu$m}) of that of current optical disks, FODs rotating at 15,000 rpm must be set close to the stabilizer within about 100 \mbox{$\mu$m}. Because of this severe positioning constraint at high-speed rotation, high accuracy of assembly and positioning are required in the drive system, and the mechanical margin of the setting is very narrow. To overcome this problem, we developed a new stabilizing method that can suppress the axial run-out while keeping a wide clearance margin between the disk and stabilizer by restricting airflow to the stabilizer.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.49.08KC02